Langer's Sudoku Assistant

Invalid Sudoku!

Column 6 is invalid. Go back and make a different choice.

 

8
9
7
4
1
5
6
3
2
4
2
5
3
8
6
7
1
9
3
6
1
2
7
9
4
8
5
7
5
8
9
6
4
3
2
1
1
4
3
2
5
7
9
6
8
9
2
6
1
3
8
7
5
4
1
7
6
5
4
3
2
8
9
8
9
3
6
1  2  3
4  5  6
7  8  9
1
5
7
4
5
4
2
8
9
7
6
1
3

 

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